I reckon the HabiStat range from "the Herp shop" are the best. I personally use the switching ones which are $80 ea.
http://www.herpshop.com.au/
I would second the praise of the Microclimate EVO - they are sensational - and very easy to change fuses if it fails - super easy to set up and gives you all 3 options - Dimming / Pulse or On/Off
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